Air filter housing
Thread Starter
Instructor
Joined: Aug 2014
Posts: 185
Likes: 0
Air filter housing
I've heard a lot that everyone who owns a c4 should either buy a new unrestrictive housing for the air filter or cut it up themselves. I'm thinking of cutting it myself but was just wondering if anyone had pictures of theirs so I don't completely screw this up. Thanks for any help guys really appreciate it
Safety Car
Joined: Aug 2002
Posts: 3,842
Likes: 230
From: SANTA CRUZ CA
Do you really believe GM automotive engineers don't understand
the need for sufficient clean air flow for the Corvette engine, and
would design a restrictive air cleaner package?
I'm sure there are those whose dyno numbers improved after
cutting the air filter (plus adding an airfoil, along with the throttle
body bypass).
the need for sufficient clean air flow for the Corvette engine, and
would design a restrictive air cleaner package?
I'm sure there are those whose dyno numbers improved after
cutting the air filter (plus adding an airfoil, along with the throttle
body bypass).
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 412
From: WV
I cut all the vents out of mine, then ground them flush with a grinder...I did it because my 383 motor sucks more air then the stock motor did....
Seabright,,,As far as the GM engineers designing the proper air filter housing for our cars , "aren't these the same guys that put the 305 intake on our 350 motors"???..
...WW
Seabright,,,As far as the GM engineers designing the proper air filter housing for our cars , "aren't these the same guys that put the 305 intake on our 350 motors"???..
...WW
Last edited by WW7; Sep 25, 2014 at 03:13 PM.
Safety Car
Joined: Oct 2007
Posts: 4,426
Likes: 229
From: Pennsylvania
Buy a used cover plate on the famous auction site we all use. Keep your original one intact and put it in storage. Cut the center out of the replacement cover. Grind down the rough edges and paint it black again. It works great. I did it myself. 
Safety Car
Joined: Apr 2011
Posts: 3,660
Likes: 22
Go a step farther and strip the cover and POLISH it !
I did that and it looks Fantastic ! Aluminum was made to be polished.
BUT,
don't bother with ANY of that stuff unless you toss $75 into a real K&N filter. THAT will benefit the engine and it will also save you money. Its the LAST air filter you buy for that car,. I've thrown mine in the washer, hosed it out, used the pressure washer on it and its STILL like new and works like a charm. Lite oil mist and its good for another few months.
I did that and it looks Fantastic ! Aluminum was made to be polished.
BUT,
don't bother with ANY of that stuff unless you toss $75 into a real K&N filter. THAT will benefit the engine and it will also save you money. Its the LAST air filter you buy for that car,. I've thrown mine in the washer, hosed it out, used the pressure washer on it and its STILL like new and works like a charm. Lite oil mist and its good for another few months.
Safety Car
Joined: Aug 2002
Posts: 3,842
Likes: 230
From: SANTA CRUZ CA
http://www.ehow.com/how_5386071_fix-chevy-problems.html
And, maybe we should include the ignition recall.
Team Owner
Joined: Jul 2004
Posts: 28,463
Likes: 3,288
From: Hartford WI
Do you really believe GM automotive engineers don't understand
the need for sufficient clean air flow for the Corvette engine, and
would design a restrictive air cleaner package?
I'm sure there are those whose dyno numbers improved after
cutting the air filter (plus adding an airfoil, along with the throttle
body bypass).
the need for sufficient clean air flow for the Corvette engine, and
would design a restrictive air cleaner package?
I'm sure there are those whose dyno numbers improved after
cutting the air filter (plus adding an airfoil, along with the throttle
body bypass).
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Drifting
Joined: Jun 2013
Posts: 1,590
Likes: 60
From: ft myers FL/Munising MI
holy crap! what do you do if your gov't tells you to take a long walk off a short pier??????.....
I'd cut it like the other's said....I bought the vortex air something.375 bucks.....peice of crap, made no difference and had to make cuts to install it...
I'd cut it like the other's said....I bought the vortex air something.375 bucks.....peice of crap, made no difference and had to make cuts to install it...
Last edited by playsdixie; Sep 25, 2014 at 03:47 PM.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
I'm thinking of cutting it myself but was just wondering if anyone had pictures of theirs so I don't completely screw this up.
Gordon Killabrew told me that the TB coolant was done because once, during testing, a throttle plate froze up. I did the bypass no only to cool the intake system but mostly so I didn't have to drain coolant every time I pulled the TB and/or intake top.
Similarly Gordon gave me the scoop on the reason for the infamous "frisbee" on the '88-'91 L98s.
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 412
From: WV
I'm not sure cutting the lid is going to make a noticable improvement in a stock engine, but it did make an improvement on my 383 that I could hear and feel..I would still cut it on a stock engine, because it can't hurt to open up the air flow......WW
Last edited by WW7; Sep 25, 2014 at 03:50 PM.
Team Owner
Joined: Jul 2004
Posts: 28,463
Likes: 3,288
From: Hartford WI
Not to worry. Just lay masking tape around the vent, mark and cut. Finish up with sanding and some black paint. A K&N is a good investment too.
Gordon Killabrew told me that the TB coolant was done because once, during testing, a throttle plate froze up. I did the bypass no only to cool the intake system but mostly so I didn't have to drain coolant every time I pulled the TB and/or intake top.
Similarly Gordon gave me the scoop on the reason for the infamous "frisbee" on the '88-'91 L98s.
Gordon Killabrew told me that the TB coolant was done because once, during testing, a throttle plate froze up. I did the bypass no only to cool the intake system but mostly so I didn't have to drain coolant every time I pulled the TB and/or intake top.
Similarly Gordon gave me the scoop on the reason for the infamous "frisbee" on the '88-'91 L98s.
Team Owner
Joined: Jul 2004
Posts: 28,463
Likes: 3,288
From: Hartford WI
Make sure you have a bathing suit on...Because your azz is going to get wet...
I'm not sure cutting the lid is going to make a noticable improvement in a stock engine, but it did make an improvement on my 383 that I could hear and feel..I would still cut it on a stock engine, because it can't hurt to open up the air flow......WW
I'm not sure cutting the lid is going to make a noticable improvement in a stock engine, but it did make an improvement on my 383 that I could hear and feel..I would still cut it on a stock engine, because it can't hurt to open up the air flow......WW
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Yep... for those that aren't familiar with the 305 problem:
http://www.ehow.com/how_5386071_fix-chevy-problems.html
http://www.ehow.com/how_5386071_fix-chevy-problems.html
Stock air filter housing in the 'Vette was sufficient for the 405hp ZR-1...so I'm betting that it's probably O.K. for a stock or stockish, any other C4 engine.
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 412
From: WV
....I don't know what Seabrights 305 article has to do with that issue.....I believe the filter housings on the 90 and up Corvettes were larger..My buddy has a 90 Corvette and his filter housing looks much larger then mine.......WW
Last edited by WW7; Sep 25, 2014 at 06:49 PM.